Copyright © 2007 Atmel Corporation
The DAC converts digital values to analog voltages. The DAC has 12-bit resolution and is capable of converting 1 million samples per second. The output from the DAC can either be continuous to one pin, or fed to two different pins using a sample and hold circuitry. Options like low power mode and gain and offset calibration are available.
The output signal swing is defined by the reference voltage AREF. The DAC operates in unipolar mode, i.e. output voltage shifts within the 0V to AREF range. The following sources are available as AREF in the DAC:
The driver is composed of dacifb.c and dacifb.h.
Two examples are available:
How to use the DACIFB driver to control a DAC ouput using a timer trigger.
How to use the DACIFB driver to control a DAC ouput using an EVENT trigger.